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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7417472 | Multi-channel integrated circuit A multi-channel integrated circuit is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge sensitive amplifier at its input followed by other circuitry such as shaper, pole-zero, peak h... | 08/26/2008 |
| 7375559 | Differential comparator with a replica input stage to set the accurate bias current for improved common mode rejection Methods and apparatus for properly biasing differential comparators are provided. Using a feedback relationship, a bias for a main stage that receives a first differential input of the comparator is produced. Separately, a feedback relationship produces a bias for a... | 05/20/2008 |
| 7358779 | Amplitude compensation circuit with programmable buffers According to one exemplary embodiment, an amplitude compensation circuit includes a first composite programmable buffer for receiving a first input signal with a first input amplitude. The amplitude compensation circuit further includes a second composite programmab... | 04/15/2008 |
| 7336756 | Reprogrammable bi-directional signal converter A signal converter is comprised of a plurality of counters (“macro-counters”). In turn, each of the macro-counters is comprised of a plurality of single-bit counters (“micro-counters”) that are adapted to receive configuration data in the form of bit fields.... | 02/26/2008 |
| 7301151 | Detector for the temporally resolved recording of detection events The invention relates to a detector for the temporally resolved recording of detection events, comprising a converter device (34, 35, 36), which in the operating state supplies an electrical signal when a detection event occurs, and evaluation electronics ( | 11/27/2007 |
| 7292077 | Phase-lock loop and loop filter thereof A loop filter includes a first resistor, a first capacitor, and an amplifier with a specific gain. Wherein, the amplifier includes an input terminal coupled to an input terminal and an output terminal of the loop filter through the first resistor. In addition, the a... | 11/06/2007 |
| 7148587 | DC-DC converter circuit, power supply selection circuit, and apparatus useful for increasing conversion efficiency In a DC-DC converter circuit having a plurality of input terminals connected to a plurality of DC power supplies, and an output terminal, the DC-DC converter circuit includes a power supply selection section for selecting a DC power supply of lowest voltage on the c... | 12/12/2006 |
| 7130236 | Low power delay controlled zero sensitive sense amplifier In one embodiment of the invention an integrated circuit is provided including a sense amplifier to read data from a memory cell that has a first transfer gate, a second transfer gate, a comparator, and a control circuit. The first transfer gate has a first pole cou... | 10/31/2006 |
| 7126386 | Multi-channel integrated circuit A multi-channel integrated circuit is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge sensitive amplifier at its input followed by other circuitry such as shaper, pole-zero, peak h... | 10/24/2006 |
| 7035349 | Signal compensation circuit and demodulating circuit with high-speed and low-speed feedback loops A signal compensation circuit compensates for direct-current offset of an input signal by amplifying the input signal with an amplifier having a variable direct-current offset. A low-speed negative feedback loop charges and discharges a capacitor in an integrating c... | 04/25/2006 |
| 6720812 | Multi-channel integrated circuit A multi-channel integrated circuit is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge sensitive amplifier at its input followed by other circuitry such as shaper, pole-zero, peak h... | 04/13/2004 |
| 6559688 | Voltage comparing circuit A voltage comparing circuit of the invention includes a first and a second capacitor terminals on one side of which are respectively connected to a positive side voltage of an analog input signal and a negative side voltage of a reference voltage via a fi... | 05/06/2003 |
| 6366126 | Input circuit, output circuit, and input/output circuit and signal transmission system using the same input/output circuit There is provided a signal transmission system, wherein when a control signal which puts an output terminal of an output circuit 12A into a high-impedance state is supplied to the output circuit 12A and an input circuit 14A, power is fed to the input circ... | 04/02/2002 |
| 6333648 | Readout chip for nuclear applications A multi-channel readout chip is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge sensitive amplifier inputs with self triggering output. The trigger threshold can be adju... | 12/25/2001 |
| 6323694 | Differential comparator with a programmable voltage offset for use in an automatic tester A test circuit operable to examine both differential outputs and single outputs of a device under test (DUT), the circuit comprises a first circuit having as inputs a first output of the DUT and a first set of independent reference voltages, and an output... | 11/27/2001 |
| 6304144 | Differential amplification circuit DC components are removed by a first and a second capacitor from a normal signal and its inverted signal from a first and a second input terminal, and the signals are input to a DC level generating circuit. The DC level generating circuit newly adds a DC ... | 10/16/2001 |
| 6229345 | High speed charge-pump An apparatus comprising a first circuit, a second circuit and a third circuit. The first circuit may be configured to generate a first current in response to a first input signal. The second circuit may be configured to generate a second current in respon... | 05/08/2001 |
| 6215336 | Reference type input first stage circuit in a semiconductor integrated circuit A semiconductor integrated circuit having a plurality of input first stage circuits, each performing a comparison of an individual input signal level to a reference voltage level, wherein a plurality of different reference voltage lines having different r... | 04/10/2001 |
| 6188251 | Analog voltage maximum selection and sorting circuits An analog circuit is provided to output the maximum voltage from among the set of analog voltages produced by a set of voltage sources connected to the input terminals of the circuit. The circuit has a number of output terminals equal to the number of inp... | 02/13/2001 |
| 6150849 | Readout chip for nuclear applications A multi-channel readout chip is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge sensitive amplifier inputs with self triggering output. The trigger threshold can be adju... | 11/21/2000 |
| 6118307 | Switched capacitor sorter based on magnitude A switched capacitor sorter based on magnitude includes a plurality of input units, a winner-take-all (WTA) circuit for finding a maximum voltage level, and an output unit. A plurality of input voltages are simultaneously input to the respective input uni... | 09/12/2000 |
| 5726742 | Circuit and method for determining time of arrival An improved circuit and method of making precise time of arrival measurements on optical pulse data of relatively varying widths. The invention provides an analog input pulse representing received optical pulse data, along with a delayed version of the an... | 03/10/1998 |
| 5703503 | Winner-take-all circuit A winner-take-all circuit for judging a channel receiving an analog signal having the largest or smallest value among multiple channels upon input of analog signals. Each basic circuit includes a detecting unit for comparing an input voltage with a refere... | 12/30/1997 |
| 5696458 | Front end data readout chip A multi-channel readout chip is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge amplifiers with self trigger and calibration capabilities to provide timing information w... | 12/09/1997 |
| 5565800 | Comparator circuit and method of controlling comparator circuit Switch circuits 21 and 22 are opened before switch circuits 31 and 32 are opened so that clock field through-noises inputted from the switch circuits 31 and 32 are not inputted to a differential amplifier circuit, and also switch circuits 11, 12, 51 and 5... | 10/15/1996 |
| 5550494 | Voltage selecting device for receiving a plurality of inputs and selectively outputting one thereof A power supply circuit selectively provides various voltage signals to memory devices, such as EPROM or EEPROM for example. The power supply circuit receives voltage signals at input terminals and selectively outputs a voltage signal, in accordance with t... | 08/27/1996 |
| 5440253 | Semiconductor integrated comparator circuit A very dense polarity detection circuit which detects the polarity of a dc voltage on a transmission line. When incorporating such a very sense detection circuit, a semiconductor integrated circuit device is formed of a reduced number of parts. The polari... | 08/08/1995 |
| 5424663 | Integrated high voltage differential sensor using the inverse gain of high voltage transistors An integrated high voltage differential sensor which uses the inverse gain of a pair of parasitic JFETs to provide a low power circuit for translating a differential high voltage signal down to a lower voltage level that can be easily sensed by the low vo... | 06/13/1995 |
| 5327021 | Waveform synthesizing circuit A waveform synthesizing circuit comprises a plurality of signal output switching means for outputting predetermined magnitudes of voltage or current signals when a voltage or current value of an input pulse reaches preliminarily assigned comparing referen... | 07/05/1994 |
| 5272394 | Wide bandwidth peak follower circuitry The magnitude of successive peaks in a time varying electrical signal are measured by applying the signal to magnitude circuitry capable of providing an output related to signal magnitude. The circuitry has a first state during which the output is depende... | 12/21/1993 |
| 5271038 | Distortion suppression using thresholding techniques A distortion suppressor and method for suppressing distortion that performs processing in the time domain to suppress partial time distortion of received signals, and/or the frequency domain to suppress partial band distortion of the received signals. For... | 12/14/1993 |
| 5256981 | Digital error corrected fractional-N synthesizer and method A digital error corrected Fractional-N synthesizer having a reference frequency generator for providing a reference frequency signal and a voltage controlled oscillator for providing an output signal having a frequency equal to a fractional multiple of sa... | 10/26/1993 |
| 5237286 | Method and apparatus for generation of high frequency pulses A method and apparatus for generation of high frequency pulses and for excitation of nuclear magnetic resonance of a sample generates a plurality of modurated high frequency waves having different frequencies from each other, and combines the generated th... | 08/17/1993 |
| 5202882 | Method for checking transmission properties of a subscriber line circuit Given the prerequisite of a division of a subscriber line circuit into a high-voltage portion and a signal processor that defines the transmission-oriented properties, voltages arising at significant locations of the receiving branch and of the transmitti... | 04/13/1993 |
| 5153454 | Chopper type comparator A chopper type comparator, for comparing a first analog input signal voltage and a second analog input signal voltage to each other, includes an input portion for inputting the first and second analog input signals, respectively, and selectively outputtin... | 10/06/1992 |
| 5113090 | Voltage comparator A voltage comparator is provided including a differential amplifier, first, second and third switches, and first and second capacitors. A fourth switch is connected in series between the second and third switches and an input terminal of the differential ... | 05/12/1992 |
| 5063580 | Apparatus for conditioning a control signal Apparatus for controlling the time constant of a signal includes an up/down counter for counting pulses of a clock signal. The count value is utilized as output signal. The output signal is compared with the input signal to provide a first control signal ... | 11/05/1991 |
| 5047667 | Voltage difference detector A circuit is provided to detect which of a simultaneous plurality of varying input signals has the dominant maximum amplitude. Two simultaneous input signals are compared with each other; or each of more than two simultaneous input signals is compared ind... | 09/10/1991 |
| 4999521 | CMOS analog multiplying circuit A CMOS analog multiplying circuit comprising a first transistor (1) having its current electrodes coupled between a first reference voltage line and a first node and its gate electrode coupled to a first input node having, in use, an input voltage such th... | 03/12/1991 |
| 4995106 | Fast decision feedback decoder for digital data The decision feedback decoder of the invention receives sequentially digital values corresponding to a data stream transmitted by a signal transmission channel. The decoder has two parallel signal paths. The first path has a first logic circuit which rece... | 02/19/1991 |
